Emerson 250, 350 operation manual Area Classification Installation Safety

5.1 Area Classification Installation Safety

If the instrument is used as an explosion proof (exp) device then exp conduit must be sealed within 18 inches of the termination point – at the instrument.

Power must be supplied by an isolated supply.

Caution-To reduce the risk of ignition of hazardous atmospheres, disconnect the device from the supply circuit, or area must be known to be non-hazardous, before opening.

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